Defective Carbon‑based Electrocatalysts for Carbon Dioxide Reduction

Electrocatalytic carbon dioxide (CO2) reduction (ECR) holds the potential to close the carbon cycle and store renewable energy. However, there are still some problems such as low activity and selectivity, and poor stability. One of the most promising strategies to improve ECR activity is to develop electrocatalysts with low cost, high activity, and long-term stability. Recently, defective carbon-based nanomaterials have … Read More

Ultrastable Cu Catalyst for CO2 Electroredction to Multicarbon Liquid Fuels by Tuning C-C Coupling with CuTi Subsurface

The Electrochemical reduction of CO2 to liquid fuels is highly desirable due to the high energy density and security in storage and transportation of the liquid fuels. Normally, the design of highly active and efficient catalytic materials is the key to the CO2 conversion to C2+ fuels. Among various electrocatalysts, copper (Cu)-based materials are considered the best catalyst candidates for … Read More

Strategies to produce high-purity and high-concentration of liquid fuels from carbon dioxide

As the renewable electricity price falls continuously, liquid fuels generated from the electrochemical CO2 reduction reaction (CO2RR) are of particular interest due to their high energy densities and ease of storage and distribution. Unfortunately, they are typically formed in low concentrations and mixed with impurities due to the current limitations of traditional CO2 electrolysers as well as CO2RR catalysts. Therefore, … Read More

Continuous electroreduction of CO2 towards formate in gas-phase operation at high current densities with an anion exchange membrane

The electrochemical conversion of CO2 to formic acid or formate has attracted great interests recently. There is a large number of studies published in this field. However, most of the studies operated in a discontinuous mode in different electrochemical reactor configurations which is not feasible for industrial applications. Further, many studies were conducted with a current density lower than 100 … Read More

Hydrogen Production: Photocatalytic Water Splitting or Solar-Electrolysis?

Recently, a paper was published in Nature (doi.org/10.1038/s41586-021-03907-3), demonstrating a 100 m2 array of panel reactors to produce hydrogen from water under the sun. Hydrogen is an attractive and versatile energy carrier, which can be produced from water through photocatalysis using sunlight, and through electrolysis driven by solar or wind energy. Photocatalytic water splitting reaches notably lower conversion efficiencies of … Read More

Electroosmotic flow steers neutral products and enables concentrated ethanol electroproduction from CO2

Electrochemical CO2 reduction reaction (CO2RR) provides a promising route to convert renewable electricity into valuable and storable multi-carbon products such as ethanol. With recent advances in CO2RR catalysts, the electroproduction of ethanol approaches industrially relevant production rates and selectivities. Membrane electrode assembly (MEA) electrolyzers are reaction platforms that, when equipped with highly active and selective catalysts, enable CO2-to-ethanol conversion at … Read More

New technique improves conversion of carbon dioxide into liquid fuels

A new approach to improve conversion of CO2 into liquid fuels has been recently highlighted by PHYS.ORG. The technique is developed by Alexis Bell’s group from Lawrence Berkeley National Laboratory (LBNL) by coating the surface of the copper catalysts with Nafion™ and Sustainion® ionomers, leading to a 250% increase in C2+ production compared to static electrolysis over uncoated copper. (https://www.nature.com/articles/s41560-021-00920-8) . Read More at https://phys.org/

Starch from CO2 – a disruptive revolution

Fig. 1. Design and modular assembly of an artificial starch anabolic pathway. Inner circle: schematic of the artificial starch pathway drafted by computational pathway design with divided modules. C1 here indicates formic acid and methanol. Outer circle: schematic of artificial starch anabolic pathway (ASAP) 1.0, with individual modules colored. Auxiliary enzymes and chemicals are indicated. ADPG, ADP glucose; aox, alcohol … Read More

pH Dependence of CO2 Reduction to CO

Fig. 1 CO2 electrolysis. Schematic representation of the gold gas diffusion electrode system CO2 electrolysis has mainly been performed in neutral or alkaline media, but some fundamental work shows that high selectivities for CO can also be achieved in acidic media. A recent paper, published in nature communications (doi.org/10.1038/s41467-021-24936-6), reported that CO2 electrolysis can operate at pH 2-4 in sulfate … Read More

Low-Valence Znδ+(0<δ<2) Single-Atom Material as Highly Efficient Electrocatalyst for CO2 Reduction

The electrochemical CO2 reduction reaction (eCO2RR) represents a promising solution for mitigation of excessive CO2 concentration in the atmosphere as well as for utilization and transformation of CO2 into value-added chemicals and commodities. This technology, if powered by renewable energy such as solar and wind power, has great potential to reach industrial level and achieve long-term energy storage. However, the … Read More